<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>核酸检测系统</title>
</head>
<body>
<div style="align-content: center">
  <h1 style="align-content: center">核酸检测系统</h1>
  <select>
    <option ></option>
  </select>
  <input type="button" value="查询">
  <input type="button" value="添加" style="float: right"><br/>\

</div>

</body>
</html>